Metallic piston-rod packing.



. W. HOEY.

METALLIC PISTON ROD PACKING.

APPLICATION FILED D1505, 1010.

NE! l Patented Nov. 14, 1011;

WILLIAM [705K w m wLullIlA PLANOGIAPH 60-. WASHINGTON, n. c.

WILLIAM HOEY, OF GRAND RAPIDS, MICHIGAN.

METALLIC PISTON-ROD PACKING.

Specification of Letters Patent.

Application fi1ed December 5, 1910.

Patented Nov. 14, 1911.

Serial No. 595,700.

To all whom it may concern:

Be it known that I, WILLIAM HonY, a citizen of the United States ofAmerica, residing at Grand Rapids, in the county of Kent and State ofMichigan, have invented certain new and useful Improvements in MetallicPiston-Rod Packings; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to improvements in metallic piston rod packings,and its object is to provide the same with various new and usefulfeatures, hereinafter more fully described, and particularly pointed outin the claims, reference being had to the accompanying drawings, inwhich:

Figure 1 represents a packing gland, a section of a steam enginecylinder head in verticalsection, and a portion of the piston rod withmy improved metallic packing in.

operative position; Fig. 2 shows my improved packing and a portion ofthe piston rod detached with the packing rings and spring removed; Fig.3 a vertical section of my packing; Fig. 1 a transverse vertical sectionof the packing with the piston rod in place. Fig. 5 shows one of the twosmall segments of the packing members; and, Fig. 6 a plan view of one ofthe two hemispherical packing members.

Like numbers refer to the figures.

1 represents the piston rod of any engine; 2 the cylinder head, and 3 apacking gland as usually constructed, when metallic packings are used.

My improved packing consists of a globular body preferably made of asoft metal,

like parts in all of and divided through the center into twoequal parts7 and 7 which are spaced apart, and have an opening through their axesadapted to closely fit around the piston rod 1. This globular bodycomposed of the parts 7 and 7 is provided with a transverse openingadapted to receive two slidable detached segmental members 8 and 8? madefrom a soft metal, which members also closely engage the piston rod 1 attheir inner sides, are also carried by the steam against the wall of theopening and are also spaced apart at the top and bottom from the members7 and 7*, so that these members 7 and 7 will have room to close in onthe piston rod as they wear away.

9 and 10 are concave members of hard metal which loosely surround thepiston rod and are provided with cup shaped openings to fit over themembers 7, 7 8, and 8 forming a steam tight joint between their concavesurfaces and the convex surfaces of the said parts 7, 7 8, and 8 andhold them in operative position. The member 10 engages the head 4: ofthe packing gland and forms a steam tight joint at 12, the face of themember 10 and the inner face of the head 4 being ground where the twoengage each other. A spring 11 is interposed between the bottom of thepacking gland and the member 9, and forces the said member against thepacking, holding it securely in place and forcing the parts by virtue oftheir globular shape and the cup shaped openings in the packing ringstightly against the piston rod, the packing rings 9 and 10 being at alltimes spaced apart.

A packing 6 is interposed between the packing gland 3 and its head 1,which prevents escape of steam from the gland, the head being held inposition by cap screws 5.

It will be seen that the steam which enters the packing gland willentirely surround this metallic packing, but is prevented from escapingthrough the head of the gland by the packing 6 and the ground joint at12. Neither can it escape through the packing around the piston rod 1,as the several parts of which the globular packing is composed, are heldin close contact with the piston rod and with each other and prevent anyescape of steam through them. It will be seen that as the soft metal ofwhich this packing is made wears away, the packing ring 9 will be forcedfarther upon the packing by means of the spring 11, and when the engineis working by the steam pressure, thus holding it continuously in closecontact with the piston rod. It will also be noticed that this packingautomatically conforms to the alinement of the piston rod.

What I claim is 2-- 1. A metallic piston rod packing, comprising aglobular body having an axial opening for the piston rod divided in theplane of the axis and spaced apart, said body also having openingstransverse to the axis thereof, detached segmental members in saidopenings extending partially within each division and across the spacetherebetween, and means for holding said body and segments in contactwith a piston rod.

2. A metallic piston rod packing, consisting of a body having oppositelyinclined ends and also having an axial opening and divided in the planeof the axis, detached segmental members each extending partially withineach part of said body and transversely of said axial opening, ringshaving inclined surfaces oppositely engaging said ends, and a spring toyieldingly force said rings toward each other.

3. A metallic piston rod packing, comprising a globular body having anaxial openingextending therethrough and also Copies of this patent maybeobtained for five cents each, byaddressingthe Commissioner of Patents,

divided in the plane of the axis into two equalparts spaced apart andalso having transverse openings in each part, detached segmental membersin said openings extend- ;ing partially inv each part of said body andacross the space therebetween, rings having concave surfaces to engagethe respective ends of said body, a casing to contain said packing, anda spring in said casing to force the rings toward each other.

In testimony whereof I affix my signature 1n presence of two witnesses.

WILLIAM HOEY. Witnesses:

JAMEsB. HOEY, LUTHER V. MOU'LTON.

Washington, D; .0.

